Amazon S3 CORS错误

Question

I've been getting permission denied errors when my app requests files through Javascript on amazon S3.

I have a CORS file set up and it seems to work most of the time, but fail intermittently.

I can always solve this problem by clearing my browser cache.

Any clues on what this could be? I'm not using cloudfront, which I know some people have found to cause a problem.

Answer 1

As far as I remember, Chrome does not allow CORS requests made from localhost:

Rejection: XMLHttpRequest cannot load s3.amazonaws.com/rifff_bucket/…. Origin localhost:3000 is not allowed by Access-Control-Allow-Origin.

Try to setup a dev domain on your work PC.

Other then that, for me S3 also rejects CORS requests even though they aren't made from local host.